18 Questions
What is the primary reason for avoiding multivalued dependencies in databases?
To eliminate data anomalies
What is the main purpose of read-only databases in business intelligence systems?
For data mining and reporting
What is a characteristic of read-only databases?
They are never updated in the operational database sense
What is the primary advantage of denormalization in read-only databases?
It improves application processing speed
What is a common use of read-only databases?
Data warehouses
What is the main goal of designing read-only databases?
To produce information for decision making
What is a primary goal when designing a read-only database?
To optimize data querying performance
What type of dependency is present when a single column value determines the values of other columns?
Functional dependency
What is denormalization?
The process of increasing data redundancy
What is a common issue in database design that can be addressed through normalization?
All of the above
What is an essential step in assessing table structure?
All of the above
What type of database is typically designed to store data from updatable databases?
Read-only database
What issue does the multivalue, multicolumn problem in database design represent?
A problem where multiple values of an attribute are stored in more than one column
What is a common solution to the multivalue, multicolumn problem in database design?
Using a separate table to store the multiple values
What is denormalization in the context of database design?
The process of adding redundant data to improve query performance
What is a common issue with designing read-only databases?
Difficulty in performing complex queries
How does data warehousing address the multivalue, multicolumn problem in database design?
By avoiding the use of multiple values for a single attribute
Which of the following is a common problem with designing databases from existing data?
Inconsistent values
Test your knowledge on designing databases using normalization, SQL table structures, advantages and disadvantages of normalization, denormalization, and read-only databases. This quiz is based on the fundamentals, design, and implementation covered in Chapter 4 of the sixteenth edition of 'Database Processing' by Pearson Education.
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